Testo K. K.® testo470　5630470 5630470

Measurement range: Optical system by modulated light beam/+1 to +99,999rpm, Contact system/+0.1 to +19,999rpm (differs according to the rotation axis diameter)
Accuracy ±1 digit: ±0.02% of the measured value
Resolution: 0.01rpm (+1 to +99.99rpm), 0.1rpm (+100 to +999.9rpm), 1rpm (+1,000 to +99,999rpm)
Speed: 0.10 - 1,999m/minute, 0.30 - 6,500Ft/minute, 4.00 - 78,000 inches/minute
Length: 0.02 - 99,000m, 0.01 - 99,000Ft, 1.00 - 99,999 inches
Accuracy ±1 digit: 0.02m (by resolution)
Surface speed: Disc 0.1m
Operation temperature: 0 to +50℃
Battery type: AA dry cell x 2
Battery life: 40 hours
Outer dimensions: 175 x 60 x 28mm
Mass: 190g